Concerns with the troubled implementation of the Affordable Care Act continue to dominate the attention of many lawmakers.

Congress returns to Washington later Tuesday after the Veterans Day weekend and House Republicans plan to spend most of the week focused on ways to either fix or roll back the law. Over in the Senate, Democrats aren't planning any official action to address the law's problems, but the White House remains sensitive to how its troubles could upset the reelection chances of several moderate Democrats next year. President Obama, in an interview with NBC News last week, didn't rule out making at least some fixes through executive action to address concerns -- but is ruling out new legislation.

Here's a quick review of what Congress has on tap regarding the health-care law this week: